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发明名称
Mobile hoists for positioning equipment carried thereby
摘要
申请公布号
GB2026982(A)
申请公布日期
1980.02.13
申请号
GB19790026238
申请日期
1979.07.27
申请人
BOC LTD
发明人
分类号
E21B41/10;(IPC1-7):B66F11/00;B66B7/02
主分类号
E21B41/10
代理机构
代理人
主权项
地址
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